Description: Scrolling slows down around WMF images (GDI-only) Steps to Reproduce: 1. Open attachment 97742 [details] (bug 77519) 2. Scroll to page 9 -> notice a slowdown 3. Zoom in/out with CTRL+Scroll wheel .. even slower Actual Results: Slow Expected Results: As fast in 4.4.7.2 -> Nearly no lag Reproducible: Always User Profile Reset: No Additional Info: Version: 7.1.0.0.alpha0+ (x64) Build ID: a35c18aeff3b1d8f270db7e094850fb8ba1ab84a CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: Skia/Raster; VCL: win Locale: nl-NL (nl_NL); UI: en-US Calc: CL -> Skia was disabled while testing
Created attachment 162072 [details] Perf flamegraph It seems to be difficult to bibisect this due to the "weld FontNameBox" commit causing much CPU use in Linux 6.5 repo :( Arch Linux 64-bit Version: 7.1.0.0.alpha0+ Build ID: 43bdac0ebd65dfc32a0b8cf2c42fde88ad585e3f CPU threads: 8; OS: Linux 5.7; UI render: default; VCL: kf5 Locale: fi-FI (fi_FI.UTF-8); UI: en-US Calc: threaded Built on 15 June 2020
Fine with Version: 7.0.0.0.beta1+ (x64) Build ID: 2891e91a513520d68ea2b8c59c14335861a15253 CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win Locale: nl-NL (nl_NL); UI: en-US Calc: CL
(In reply to Telesto from comment #2) > Fine with > Version: 7.0.0.0.beta1+ (x64) > Build ID: 2891e91a513520d68ea2b8c59c14335861a15253 > CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win > Locale: nl-NL (nl_NL); UI: en-US > Calc: CL With that commit vs. master in Linux 6.5 bibisect repo, I get the exact same CPU hit when zooming in/out.
(In reply to Buovjaga from comment #3) > (In reply to Telesto from comment #2) > > Fine with > > Version: 7.0.0.0.beta1+ (x64) > > Build ID: 2891e91a513520d68ea2b8c59c14335861a15253 > > CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win > > Locale: nl-NL (nl_NL); UI: en-US > > Calc: CL > > With that commit vs. master in Linux 6.5 bibisect repo, I get the exact same > CPU hit when zooming in/out. O, sorry didn't check zoom.. anyhow illustrates my point about "weld FontNameBox" it's the cause or hiding something.. flame graph points to "weld FontNameBox".. or something around fonts... and with only one person touching it..